Mots-clés

Statut des brevets

Inventeurs

Michel BARLAUD
Sandrine ANTHOINE
Eric DEBREUVE
Paolo PIRO

Statut commercial

Exclusive or non-exclusive licence Collaborative research

Laboratoire

I3S, CNRS, France, http://www.i3s.unice.fr

Description

The present invention relates to a method for measuring the dissimilarity between images, a method for ranking images from the most similar to the less similar to a query image, a method for categorizing a query image into at least two categories and a method for measuring the dissimilarity between video sequences.

Fig 1. Examples of images ranking (from COREL Database)

TECHNICAL DESCRIPTION

The invention proposes a new global description based on Sparse Multiscale Patches. The method comprises the following steps :

multidimensional feature vectors (patches) that capture interscale and intrascale dependencies among subband coefficients. These are better adapted to the description of local image structures and texture.

evaluation of the dissimilarity between the probability density function of patches

EXAMPLES OF CONTENT-BASED RETRIEVAL IMAGES

Retrieval results for 5 images of the COREL database. For each row, left to right: query image; first 4
ranked images of the database (excluding the query image).
For each retrieved image, the SMP similarity measure to the query is also shown.